package main

import (
	"fmt"
	"log"
	"os"
	"strings"

	"github.com/bmatcuk/doublestar"
	"github.com/urfave/cli"
)

func main() {
	app := cli.NewApp()

	app.Commands = []cli.Command{
		{
			Name:    "scan",
			Aliases: []string{"s"},
			Usage:   "Scan a directory's manifests",
			Action: func(c *cli.Context) error {
				if len(c.Args()) > 0 {
					return scan(c)
				}
				return cli.NewExitError("no directory provided", 5)
			},
		},
		{
			Name:    "configure",
			Aliases: []string{"c"},
			Usage:   "Configure the app",
			Action: func(c *cli.Context) error {
				return cli.NewExitError("No Configuration provided", 4)
			},
		},
	}

	err := app.Run(os.Args)
	if err != nil {
		log.Fatal(err)
	}
}

func scan(c *cli.Context) error {
	directory := c.Args().First()

	fmt.Println(strings.Join(getAllManifests(directory), ", "))
	// TODO, actually scan, don't just print names
	return nil
}

func getAllManifests(directory string) []string {
	matchingFiles := make([]string, 0)

	for _, glob := range manifestGlobs() {
		pathGlob := fmt.Sprintf("%s/**/%s", directory, glob)
		files := getManifestGlobMatches(pathGlob)

		if len(files) > 0 {
			matchingFiles = append(matchingFiles, files...)
		}
	}
	return matchingFiles
}

func getManifestGlobMatches(glob string) []string {
	files, err := doublestar.Glob(glob)
	if err != nil {
		log.Fatal(err)
	}
	return files
}